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Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy
Chen XY(陈旭阳); Yu G(虞钢); He XL(何秀丽); Li SX(李少霞); Miao HB(苗海宾)
2018-04-01
发表期刊INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
卷号96期号:2018-01-04页码:209-222
ISSN0268-3768
摘要In order to investigate the effect of droplet impact on molten pool dynamics in hybrid laser-MIG (metal inert gas) welding, a three-dimensional mathematical model was developed, and a new approach to simulate the droplet impact was proposed. In the model, the droplet heat and impact under the influence of laser was considered, and the deformation of molten pool was calculated with considering droplet impact and arc pressure. To simplify the model, a modified body heat source model was presented for laser source to take into account multiple reflections and Fresnel absorption. Surface tension, electromagnetic force, and buoyancy were considered to calculate the fluid flow pattern. Furthermore, several dimensionless numbers were used to recognize the importance of the driving forces in molten pool. It was found that molten pool dynamics and final weld bead geometry were strongly affected by the droplet impact. To demonstrate the importance of droplet impact, the temperature, velocity distribution, and the deformation of molten pool were analyzed and compared under different conditions. With considering droplet impact, the penetration was bigger, and the width was smaller. Furthermore, the simulated weld bead geometry was in good agreement with experimental measurement.
关键词Droplet impact Hybrid laser-MIG welding Aluminum alloy Molten pool dynamics Simulation
DOI10.1007/s00170-017-1509-1
URL查看原文
收录类别SCI ; EI
语种英语
WOS记录号WOS:000428797500016
关键词[WOS]NUMERICAL-SIMULATION ; HEAT-TRANSFER ; GAS-METAL ; TRANSPORT ; MODE ; 304-STAINLESS-STEEL ; SOLIDIFICATION ; SYSTEMS ; STEEL
WOS研究方向Automation & Control Systems ; Engineering, Manufacturing
WOS类目Automation & Control Systems ; Engineering
项目资助者National Natural Science Foundation of China [11272316, 11272317, 11672304, 11502269] ; Chinese Academy of Sciences [yz201636]
论文分区二类
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77807
专题先进制造工艺力学重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Chen XY,Yu G,He XL,et al. Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy[J]. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,2018,96(2018-01-04):209-222.
APA 陈旭阳,虞钢,何秀丽,李少霞,&苗海宾.(2018).Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy.INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,96(2018-01-04),209-222.
MLA 陈旭阳,et al."Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy".INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 96.2018-01-04(2018):209-222.
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